I don't know what you want though, I have GBA and N64 emulators on my Macbook, and have a lot of ROMs in my Macbook too, usually i play these games, remind for u: whenever you play a game on Macbook, the fan is going to run really fast and makes noise, what you need is a cooler or what i do is put 4 erasers under my Macbook, so it won't touch the table surface and get so hot. Macbook is not a computer that's good for playing games. Also, I have War Craft 3, and some other games bought from store, but i don't use it on my Macbook, afraid it's going to shorten computer's life.
Give you some games for Mac: "Halo for mac" / "Battlefield 2142-(I like it)" / "Call of Duty-(another great one)" / "1893: A World's Fair Mystery" / "Age of Empires III" / "Battlefield 1942: Secret Weapons of WWII" / "Doom 3" / "SimCity" / "Quake 4"